HES HS2510-N, User Manual, Page: 39 / 64

37
Hwang Sun Enterprise Co., Ltd.
37 Edition 2012/02
Adhesive not
penetrating substrate.
1. The adhesive is too cold.
2. A special coating is on the
substrate.
3. Not enough adhesive is
applied.
4. Adhesive viscosity is too high.
Adjust properly the
temperatures of all heating
zones.
Increase the temperature.
If adhesive still does not
penetrate, check with
adhesive representative
for compatible adhesive.
Increase the operation
temperature or air pressure
to the gear pump, or use a
larger orifice nozzle for
higher flow-rate.
Suggest to use same kind
of adhesive with lower
viscosity.
Air or moisture bubbles
in adhesive bead 1. The level of adhesive in the
tank is too low, cause the air
into the gear pump.
2. Viscosity of adhesive is too
high.
3. The substrate surface is not
dry.
To supply certain volume
of adhesive.
Suggest to use same kind
of adhesive with lower
viscosity.
Preheat the surface of
substrate.